Speed-recording device.



v W. W. KING.-

SPEED RECORDING 1mm. APPLICATION FILED 0011.25, 1906A Patented 0011.29, 1912.

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W. W. KING. SPEED EEGORDING DEVICE. ABPLIOATION FILED 001.25, 190e.

1,042,561. Yatented Oct. 29, 1912.

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UNITE rs WILLIAM-W. KING, OF HUNTSURG, OHIO.

SPEED-RECORDING DEVICE.

Specication of Letters Patent.

Patented Oct. 29,1912.

Application filed ctober 25, 1906. Serial No. 340,471.l

- of which I hereby declare the following to i bea full, clear, and eXact description, such .others skilled in the art to as will-enable rtains to make and use the which it app same. I

The objects of the invent-ion are to proy v1 e a speed recording device designed especially for automobile use but capable of being putto all analogous uses upon all traction vehicles to indicate the momentary speed of rotating parts such as an engine or motor shaft or shaft ofa drivingfwheel and further designed to give permanent ztnd trip records for future reference. This device is operatable in connection with time clock mechanism' and periodically acting yinstrumentalities connected with the rotating part and is designed to indicate the exact speed in miles per hour during any period of 24 hours, and also to indicate the ,total distances traveled during a trip of .f plish these objects by gearing, one of which any desired length of time.

The'objects arespeciically to provide a Vibrating finger which will remain quiescent while the speed of the vehicle is the same, and will change position one way or the otherto indicate. change in s eed, as soon as the motor speed changes. i) accommeans of diiferential is clock driven, and ratchet and lever mechanism periodically operated by the-rotating part to be timed, whereby the speeds of theequalizing gears b'ecomerela'tively the same whatever changes take place in the speed of the rotating part, an a pointer operatively connected with a geary or pinion connecting tliediii'erential gears, is moved to correspond with the differentialmovement of the gears, andA becomes/quiescent at the moment the gear speed becomes `equal, thereby indicating present speed. The mechanism whereby this result is accomplished, and the instruof mileage and duration mentalities for obtaininga record of a trip andLtotal mileage, with the various details of'construction and combination and arrangement of. the various parts are hereinafter described, 'shown in the accompanyl 12 and 9. Upon ing drawings, in the claims. In the accompanying drawings, Figure 1 and specilically pointed out '1s an elevation of the device arranged to give a. total mileage record, and to indicate the exact momentary speed at any one time; Fig. 2 is an elevation of a similar device adapted to give in addition a trip record indicating upon a card the speeds employed during any period of 12 hours of the dayor night; Fig. 3 is an elevation of Fig. 1 with the cover of t-he inclosing case removed, showing the operating parts and their con- Anections and a circuit adapted to be opened and closed by an automobile axle; Fig. 4 is a detail side view of the differential gearing, the ratchet and pawl mechanism, foi` operating one of the same, the engaging pinion or idler, the gear engaging the same upon which the indicator finger is mounted, and the automatically adjustable lever mechanism by means of which the differential gear speeds are equalized and the finger made stationary at the point of momentary speed; Fig. 5 is an end view of the device Fig. 6 is a top View of the device with the case removed and with the pinion 16 thrown back to show the gear 18. In this view a. v

modified clutch is employed and certain of the gearing is omitted to preserve the clearness of the drawing, and Fig. 7 is a detail view illustrating a train of gearing hereinafter described.

In these views the clock movement shows 3 and face 4.

gages a pinion 6 and thence through pinion 6 upon a parallel shaft 7 operates a wheel 8 having a marginal face gear 9 arranged to normally maintain the same speed as the Iclock when the vehicle is going. A mild friction device such as a spring pressed friction clutch 10 Serves to rotate this wheel l `with the shaft when the motor is going but when the motor stops the wheel will stop also. 11 is a similar wheel to wheel 8 arranged with marginal teeth 12 facing the teeth 9 on the wheel 8 and is mounted loosely upon a stationary pin 13, secured to the casing 14. pivoted upon shaft 7 an arm 15 upon'the outer end of which is secured the pinion 16 whichengages with both the face gears the hub of this arm 15 are the teeth of a pinion sector 1 7 which Between these gears 8 and 11 is 105 -the lever 28, fulcrumed upon the pin 13 clock and axle of the machine are relaengage the spur l. gear 18 upon a parallell l tremit-y of which moves over the graduated are 21 arranged to designate speed per hour from zero to the greatest capacity of the machine.

The Wheels 8 and 11 and face gears 9 and 12 thereon are actuated one, 9, by the clock movement and the other 12 periodically by the movement of arotating shaft in the machine, and as shown this part is the driving axle Wheel, and it is designed thatI the speeds of the gears 9 and 12 shall normally remain equal Whatever divergence there may be in the relative speeds of clock and machine. To accomplish this result and to change the location of the indicator arm to correspond with the speed of the machine the following instrumentalities are resorted to: In this in' stance an electric circuit E is provided which is periodically opened and closed by means of contacts and y uponthe axle A and some adjacent support, and operates the electric m-agnet Z. The armature 22 for this .magnet is placed upon an arm 23, provided with a longitudinal slot 24 and a withdrawend 27 slidingly in this slot, and the other end 27 is pivotally attached toone end of and having a ratchet dog 29 pivoted upon its outer end. This dog engages the ratchet teeth 30 upon the outer edge of the Wheel 11, and rotates that Wheel and gear 12 to correspond with the speed of the machine axle A. Of course when the speed of the tively unchanged, the wheels 8 and 11 will rotate at equal'speeds and the pinion 16 between them will become an idler since t-he wheels 8 and 11 move in opposite directions.

-`When however the speed of the axle falls below or rises above that of the clock the wheels will rotate at different speeds', that of the wheel 8 remaining the same, while. the wheel 11 will vary in speed to correspond with the speed of the axle.- The variation in speed in the wheel will therefore affect the idler d6 and cause itto turn circumferentially of the gears one Way or the other and to travel upon the Wheel 8,

`and hence change the position of the arm 15 and pinion 17, and hence the position of the gear 18 and indicator finger 20, and the finger 2O will move up or down the scale accordingly.

Since the indicator finger can only remain stationary when the wheels 8 and 11 travel j at equal speed it is necessary that the gear wheel 18 which engages the pinion sector and operates the indicator finger 20 shall pull upon the link 26 b v means of a short connecting strip l), and move thc extremity of 65 the link 26 up and downlin the slot 24 in the at a time,

ing spring 25. A link 26 is pivoted at one armature arm 23 until the indicator arrives at the figure on the dial representing the exact speed at that time and until the movement of the ratchet lever and ratchet cause the movements of the wheels 8 and 11 to correspond in speed. At that time the pinion will become an idler and the finger will cease tomove.

In the figures the extremity of the link 2G and pivot 27 are shown at the upper end ofthe slot 24 nearest the pivot of member 23, and hence the movement ofthe lever 28 and paWl 29 are slight or only one tooth as when the machine is moving at its greatest speed indicated as 50 miles er hour. As the speed lessens the pivot 27 falls in the armature arm and a greater sweep being given accordingly t0 the ratchet lever, the wheel- 11 is rotated farther on each movement of the lever until the Wheels 8 and 11 rotate again with equal speeds, and the pinion again becomes an idler and the finger is quiet. In this manner a vibrating finger is provided which will remain quiescent-'while the s eed is unchanged, and will quickly change its position one way or the other to indicate changes in speed of thel machine.

The arrangement with the differential gears and intermediate pinion to control the movements of the tion of the ratchet lever and armature arm and adjustable connecting link, throw ofthe ratchet in order to accord with the position of the finger permits the finger to remain stationary so long as the speeds of the motor and clock driven gears are the same, and'eauses the gears to return to equal speed as soon as the automatically acting adjustments cause the 'finger to indicate the present speed of the machine or motor. The speeds of the oppositely facing differential gears will always equalize as soon as the speed becomes constant and the finger will come to rest and will indicate on the scale the exact speed. at that time.

'it will be readily observed that a trip dial such as shownin Fig. 2 can be added to the device,- and be rotated by means of Sprocket wheels and chain 31 and 33, applied to the' clock shaft 5, and to a Spindle 32 on which radially disposed arcs spaced to divisions of the day of 24 hours so that a complete record can be'kcpt of a days trip, showing speed during any. one hour or half hour.

The ordinary total mileage record device 130 finger and the constructo vary. the

dial is graduated in concentric circles to indicate speed, and 1s marked with' weasel for a year or any desired period such as A to .rotate in opposite directions, clockmech shown in Fig. 3v at M can be connected with the armature arm by means of a ratchet wheel 34a and rock arm and pavvl 35 and 36. The extremity of the arm 35 can have a slot 88 therein, in which a pin upon the extremity ot' the armature arm 23, plays, and hence the arm will be operated by the armature at each stroke thereof, as shown in Fig. 3. The arm 35 is pivotcd at P and moves, the ratchet 34a by means of the paivl 36 shown in Fig. Z3, and the train of gears shown in Fig. 7.

In Fig. 2 a link 37a connects the armature arm with the outer end of a pivoted lever 35 which carries a. paivl 3G, said pawl 36E engaging ratchet wheel 34"L of counter M.

In Fig. G a shown for the face gear 8 driven by the clock shaft, so that when the motor stops the clock driven wheel 8 will stop. In this view- 40 is an inclined disk upon the shaft- 19 for the indicator linger and as this finger turns `to the zero niark on the scale the disk will be turned to throw the spring clutch lever 41, and to release the clutch 42 on the face Wheel 8, but as soon as the motor starts the `finger shaft will turn to throw in the clutch again. 'Nice proportions of the parts being observed this device will work all right.

The Wheel 11 is prevented from turning too freely on its shaft by means of a spring '45, which bears frictionallyupon the hub of said wheel.

The pinion 17 is fast on the shaft 7, and the pinion 6 is loose on the shaft 7. The gea-rs 11 and 9 are loose on the shaft 'l'. This makes the clutchl 10 the only connec .tion between the gear 9 and pinion 6.

rllhe object of the spring clutch is to permit the gears 9 and 11 to slip When the pinion 16 is lthrown around in either direction far enough to strike against the gear 18. Otherwise the clock would stop when or soon after the motor had stopped.

In lieu of a spring clutch a positive clutch such as'shoWn in F ig. 6 would answer the same purpose.

The clutch 42 is thrown by a spring arm 41 operated by an inclined disk or cam, on the shaft 19 of the gear 18. This is so arranged as to release the gear 9 before the pinion 16 will strike against the gear 18, in both directions of travel of the pinion 16.. The ossibility of striking the ear 18, is plain y visible in Fig. 4, and Wou d otcui it no means were found to prevent it and the clock would stop and there would be, no means for registering. j

Having described my invention what@ claim as new and desire to secure byLetteis" Patent is I l. In combination, in a speed indicatoi;4 for a Wheeled vehicle, op'positelyk facing gears having alco'mmon axis and desined positive clutch arrangement is I anism operatively connected with' one of said tace gears, the other being a loose gear, a ratchetwvheel on the loose face gear, a

pinion bet/Ween said face gears adapted to 'engage with. both of them, a support for said pinion liltvinga hub and rotatable on the axis oi said face gears, a segmental pin i therefor, the movements of said segmental pinion being communicated to the said iinger through said gear and shaft, an arm .lia-ving a slot and adapted to vibrate once with each revolution of a vehicle wheel, means for giving said vibrator-y movement to said arm, a lever loose on the axis of the said ratchet wheel, and a pawl thereon, a

link connecting the said lever and said vibrating arm, whereby the movements of said loose face gear correspond with the movements of said vehicle wheel, a pivoted strip connecting said finger supporting gear, and said -link, and a pivot connecting said link and vibrating arm, said pivot being adjustable longitudinally and automatically in the slot in said arm, substantially as described.

2. In a speed indicator controlled by a vehicle wheel, a pair efface gears upon a common axis, and adapted to rotate independently of each' other, means for rotating one et said gears at a regular predetermined rate, an idler between said gears, and adapted to engage with them both simultaneously,

va bearing for said idler provided with a hub upon the axis oi,k said face gears, said hub having a segmental gear, an indicator finger, a shaft and gear support therefor, ,the movements ot which are controlled by said Seg mental gear, a lever and pawl and a ratchet wheel therefor, said ratchet wheel mounted upon the other 'face gear, a vibrating slotted arm the movements of which are controlled by said vehicle wheel, a link connecting said paivl. lever and vibrating arm and longitudinally adjustable in said arin and a pivoted piece connecting said linger ,supporting gear with said link, whereby the position of said link in said vibratingrm is affected by the movements of said segmental gear and linger supporting gear, and means controlled by the movements of a vehicle wheel for vibrating said vibrating arm once in each revolution ot said Wheel.

ing an axle and wheel and hub rotatable ft-herewith, iii combination With/fclock mech- .i gsm havinga tixedspeed, a face ge -r mnd, sha-itt, a loose and opposed ace'geai',

dried b eaiingpin thereforI lin said frame, an idle-r arranged toV engage with both-.of said face gears, a ratchetwheel upon the said loose gear, a pawl and lever device therefor, cally4 adjusted to rotate said ratchet Wheel a vibrating arm the movements of which and loose gear lat the speed of the fixed speed 15 are controlled by said axle whereby the said gear as the position of the idler .is chang arm is given a periodical movement, an inwhereby the linger 'will remain niet in any dieator linger operatively connected with changed position when the spe of the vesaid idler, connecting mechanism between hicle becomes constant, and'means by which said idler and finger, said idler being arthe movements of the vibrating arm are 20 rangd t'o Izlhapge positionhwhen'tlerelative controlled by said axle.

spee o t e ace gears c anges,` nt to rotate vin one position when their speeds are 1 v WILLIAM W' KING" equaland automatic mechanism controlled VVitne'sses:

by the movements of said idler,`Whe1'eby the WM. M. MONROE,

throw ofy said leverand pavvl are automati- GEO. S. ADDAMS.l 

